Valve.



PATENTED OCT. 24, 1905. C. E. HKLE'.

VALVE.

APPLIOATION FILED SEPT. 17. 1904.

IIITED STAIlES PATENT orme.

Specification of Letters Patent.

vPatented Oct. 24, 1905.

Application filed September 17, 1904. Serial No. 224.803.

To all whom/ it may con/cern:

Be it known that I, CHARLES E. I-IUxLEY, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Im rovements in Valves; and I do herebydec are that the following is a full, clear, and exact descriptionthereof, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form a part of thisspecification.

This invention relates to improvements in valves of that class in whichthe seat is formed on a ring which is removably fitted in an opening inthe bridge o1' other part of the valve-casing; and the inventionconsists in the matters hereinafter set forth, and more particularlypointed out in the appended claims.

In the drawings, Figure l is a fragmentary detail sectional view takenaxially through the valve-seat, showing my invention applied thereto.Fig. 2 is a sectional view taken through the valve-seat and closure,showing the closure in its preliminarily-closed position. Fig. 3 is aview similar to Fig. 2, showing the valve completely closed. Fig. 4 is abottom plan view of the nut which constitutes the means for clam ing theyielding part of the closure in place and also forms part of a metaloint-valve closure, as well as a stop for the closing movement of theclosure.

As shown in the drawings, A designates a valve-casing provided withbranches A A2, adapted for connection with the fluid-conveying pipes,and between the branches with an angular partition A3. In the horizontalpart or bridge A4v is formed an opening to receive a valve-seat ring C,the upper margin c of which constitutes in this instance the valveseat.Said seat-ring is held in said opening by means of exteriorscrew-threads on the ring engaging the interior screw-threads of theopening in the bridge. In the present instance said seat-ring istapered, being made widest at its upper end to correspond with thecomplemental taper of the opening in the bridge.

D designates as a whole a valve-disk or closure which is movable towardor from the valve-seat to open the valve. Said valveclosure is formed onor attached to the lower end of a rotative stem D', which in thecomplete structure has screw-threaded engagement with the casing,whereby rotation thereof imparts endwise movement to the stem andclosure to move the latter toward and from the seat. Said ring isprovided on its interior surface, as herein shown, with projections c',adapted for engagement by a suitable tool, by means of which theseatring is turned into and out of place. The closure D embraces a flatdisk D, which is provided in its under face with an annular opening toreceive a yielding disk-like member or packing D2, which latter extendsbelow the level of the lowermost part of the disk and being thereforeadapted to be first seated on the marginal or seat portion c of thevalve-seat ring to close the valve. The

` said disk D4 and packing or yielding member of the closure arefastened to the stem by being centrally apertured and fitted over thescrew-threaded stud d, which extends axially downwardly from the closureor disk, said parts being clamped in place between a nut D3, havingscrew-threaded engagement with said stud d, and a nut or shoulder D5,fixed to the stem above the disk D4. Said nut D3 is provided with apolygonal lower end d, by which it may be engaged with a suitable tool,as a Wrench, for clamping the same upon the yielding packing portion D2of the closure. Said nut is provided with an annular exteriorly-taperedportion d above the polygonal part df thereof, which is adapted to passinto and engage a complemental interior tapered portion c2 of thevalve-seat ring. The larger or upper end of said nut D3 is made ofgreater external diameter than the smallest internal diameter of thering C, so that should said nut become loosened or detached from thelower end of the valve-stem d it cannot fall through the ring and intothat part of the casing connected with the branch A thereof.

In the use of the valve when the valveclosure is first turned downagainst its seat the yielding packing D2 first strikes the upper marginor seat portion c of the annular ring C, and said yielding portion ismade of such composition that a reasonably-tight fiuid-tight oint may beformed between said parts suitable for low-pressure liquids. If,however, the closure be turned farther down on its seat, the annulartapered portion cl2 of the closure strikes against the metallic interiorannular tapered portion c2 of the seatring and constitutes a stop whichnot only prevents the upper margin or seat c of said seat-ring forcingthe yielding portion of the closure out of position, but alsoconstitutes a IIO metallic joint the presence of which, in connectionwith the joint formed between the upper margin of the seat-ring and theyielding portion of the closure, constitutes a iiuidtight joint betweensaid parts adapted to high-pressure work.

In the use of valves of this character where the closure is designed toor by reason of its structure does move toward the annular seat-ringwithout a positive stop between seat and closure the yielding part ofthe closure becomes distorted, so that after a short time the jointbetween said parts is fatally impaired. Such turning down of thevalve-closure against the valve-seat often occurs by reason of acareless use of the valve or use thereof by an inexperienced person.With my construction, on the other hand, the valve-closure may be turneddownwardly sufficiently against the seat-ring to provide a necessaryIiuid or steam tight joint between said parts, and before the force orpressure of the closure against said annular seat of the seat-ring issufficient to distort said yielding part of the closure theannulartapered face of the nut D3, constituting a part of the closure, comesinto contact with the interior annular tapered part c2 of saidseat-ring, and thereby not only prevents further descent of thevalveclosure, and thus avoiding distortion of the valve-packing, butalso the forcing together of said tapered parts of the nut and seat-ringconstitutes an additional metallic joint or closure which produces areliable closure for high-pressure work. It is to be observed that themetallic part of the disk DL or the annular flange or rim d3,constituting a retaining-flange for the packing D2, is of such diameteras to prevent said rim from coming into contact with the seat-ring.

The construction described constitutes a very reliable fluidtightclosure for valves which may, if intelligently used, be used both forlow and high pressure work and the construction of which prevents acareless use of the valve from distorting or impairing the same.

A further important advantage of the construction before referred to isthe' impossibility of clamping-nut falling through the seat-ring shouldsaid nut become accidentally detached. It will be observed as aneconomical feature of the construction that the clamping-nut itselfconstitutes part of the closure for high-pressure work and a preventionagainst impairment of the yielding part of the closure.

It is obvious that structural changes may be made in the valve withoutdeparting from the spirit of the invention, and I do not wish to belimited to such specific details eX- cept as hereinafter made thesubject of specific claims.

I claim as my inventionl. In a valve, a seat-ring and a closure movableytoward and from the seat-ring, said closure embracing a relative softface adapted to engage a seat on said ring, and a nut made of a hardermaterial for clamping said softer part of the closure in place andformed to constitute a stop to prevent the closure being turned downupon its seat in a manner to distort said softer part of the closure.

2. In a valve, a seat-ring having an annular marginal seat and withinthe latter a tapered annular seat and a closure embracing a relativesoft face adapted to engage said marginal seat on said ring, and a nutmade of a harder material for clamping said softer part of the closurein place and formed to constitute a stop to prevent the closure beingturned down upon its seat in a manner to distort said. softer part ofthe closure, and also formed to constitutel a tapered closure located inadvance of said softer part and adapted to engage said annular taperedseat of said seat-ring.

3. In a valve, an annular seat-ring on which is formed an annular' seatand a closure movable toward and from the seat, said closure embracing arelatively soft face adapted to engage the seat and a nut for clampingsaid face of the closure in place and made of an external diametergreater than the internal diameter of said seat-ring.

4. The combination with a valve-casing provided with. an opening in apart located between the induction and eduction ports thereof, and avalve-closure movable toward and from said opening, of a valve-seat ringin said opening, the upper margin of which constitutes the valve-seat,said closure being provided on its lower face with a yielding faceadapted for engagement with the annular ring and with an aXialscrew-threaded stud, and a nut engaging said stud for clamping theyielding part of the closure in place and being made of such size as toprevent its passing through the seat-ring.

5. The combination with a valve-casing provided with an opening in apart located between the induction and eduction ports thereof, and avalve-closure movable toward and from said opening, of a valve-seat ringin said opening, the upper margin of which constitutes the valve-seat,and provided inside said valve-seat with a tapered, annular valve-seat,said closure being provided on its lower face with a yielding partadapted for engagement with the marginal seat, and below the yieldingpart with an exteriorlytapered rigid part which is adapted to engage thecomplementally-tapered seat in the valve-seat ring, said parts being soarranged or relationed that the yielding part of the closure firststrikes the margin of the seatring and thereafter said tapered portionof the closure engages the interiorly-tapered portion of the valve-seatring.

6. The combination with a valve-casing,

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provided with an opening located in the part between the induction andeduction ports of the valve, and a valve-closure movable toward and fromsaid opening, of a seat-ring :fitted in said opening, the upper marginof which constitutes the valve-seat, and provided inside of saidvalve-seat with an inwardly and downwardly tapered annular portionconstituting a second seat, -said closure comprising a disk provided onits lower face with an annular recess, a yielding packing-ring in saidrecess, a screw-threaded stud extending downwardly 'from said closure,and a nut having screw-threaded engagement with said stud for holdingthe packing in place and provided with an eXteriorly-tapered portion inadvance of the packing adapted to engage the interiorlytapered portionof the seat-ring, a'lter said packing of the closure engages themarginal seat portion of said ring.

7. The combination with a valve-casing provided with an opening in thepart between the induction and eduction ports of the valve, and avalve-closure movable to ward and from the opening, ol a ring seated insaid opening, the upper margin of which constitutes the seat, saidclosure comprising an annular yielding part adapted for engage* mentwith the margin of the seat-ring and a nut of greater diameter than thebore of said ring for holding said yielding part in place and adapted toengage the seat-ring radially inside` of said seat to constitute a linalstop for said closure.

8. The combination with a valve-casing provided with an opening in thepart between the induction and eduction ports of the valve, and avalve-closure movable to- Ward and from the opening, of a ring seated insaid opening, the upper margin of which constitutes the seat7 saidclosure comprising an annular yielding part adapted for engagement withthe margin of the seat-ring and a nut for holding said yielding part inplace and adapted to engage the seat-ring to constitute a nal stop forsaid closure, said nut being made of such diameter as to prevent itsfalling through the seat-ring.

ln testimony that l claim the foregoing as my invention l aHiX mysignature, in presence of two witnesses, this 12th day of September, A.D. 1904.

CHARLES E. HUXLEY.

